EP 0106606 B1 19870715 - MOTORIZED POOL COVER
Title (en)
MOTORIZED POOL COVER
Publication
Application
Priority
US 43277582 A 19821004
Abstract (en)
[origin: EP0106606A2] @ A pool cover (10) is alternatively reeled on a spool (18) and drawn across a pool (12) by a mechanism (14) in which a motor-driven shaft (20) reels in a cover sheet to uncover the pool and the free end (24) of the sheet is pulled by cords (28) reeled onto drums (30) connected to the driven shaft to cover the pool. The cords are reeled around the drums in the opposite direction from which the sheet is reeled around the spool, and the cords are entrained around direction reversing pulleys (32) at the opposite end of the pool, an arrangement which results in the cord being reeled on the drums as the sheet is paid out from the spool and vice-versa. The cord velocity and cover sheet velocity are attempted to be matched and held constant by winding the cords onto/from a conical cord drum for the cords. The cord is guided precisely onto and from a given diameter portion on the conical drum by a cord carriage.It is preferred to try to obtain a constant and uniform tension on the opposite beaded edges of the cover sheet and on the cords on opposite sides of the pool to prevent stack from developing in the cover sheet or cords. Herein, biasing means for the spool (18) and the cord drum are provided In the form of torsion springs (48) that connect the spool and cord drums (30) to the shaft (20). The torsion springs coil or uncoil to adjust somewhat the speeds of spool rotation and drum rotation with respect to the rotational speed of the shaft. The interconnection of the spool torsion springs and drum torsion springs maintain the sheet and cords under continuous tension.Limit switch means (174) in the form of magnetically actuated switches along the side of the pool are actuated by magnets (176) carried by the cover sheet (16) to stop reel-in or pay-out of sheet at the fully covering or fully uncovering positions of the sheet.
IPC 1-7
IPC 8 full level
E04H 4/00 (2006.01); E04H 4/06 (2006.01); E04H 4/10 (2006.01)
CPC (source: EP US)
E04H 4/101 (2013.01 - EP US); Y10T 74/18832 (2015.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0106606 A2 19840425; EP 0106606 A3 19840530; EP 0106606 B1 19870715; AT E28346 T1 19870815; AU 1961783 A 19840412; AU 556270 B2 19861030; CA 1206061 A 19860617; DE 3372513 D1 19870820; JP H0627433 B2 19940413; JP S5988573 A 19840522; US 4494256 A 19850122; ZA 836961 B 19840530
DOCDB simple family (application)
EP 83305912 A 19830929; AT 83305912 T 19830929; AU 1961783 A 19830927; CA 438351 A 19831004; DE 3372513 T 19830929; JP 18579283 A 19831004; US 43277582 A 19821004; ZA 836961 A 19830919